Adjustable-scale sight for firearms.



33*248. UR 192889977 5R E. S. PALMER.

ADJUSTABLE SCALE SlGHT FOR FIREARMS.

APPLICATlON FILED SEPT-21. 1918.

1,288,977, Patented Dec. 24,1918.

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UNITED STATES PATENT OFFICE.

ERIK S. PALMER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T WINCHESTERREPEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

ADJ USTABLE-SCALE SIGHT FOR FIREARMS.

Specification of Letters Patent.

Patented Dec. 24, 1918.

Application filed September 21, 1918. Serial No. 255,060.

To all whom it may concern Be it known that I, ERIK S. PALMER, a

' citizen of the United States; residing at New Haven, in the county ofNew Haven and State of Connecticut, have invented a new and usefulImprovement in Adj ustable-Scale Sights for Firearms; and I do herebydeclare the following, when taken in connection with the accompanyingdrawings and the characters of reference marked thereon, to be a full,clear, and exact description of the same, and which said drawingsconstitute part of this application, and represent, in-

Figure 1 a view in rear elevatipn of an adjustable scale sight forfirearms, embodying my invention, and shown as applied to atelescope-sight tube represented in transverse section.

Fig. 2 a view thereof in right hand side elevation.

Fig. 3 a view thereof partly in rear elevation, and partly in verticaltransverse section.

Fig. 4 a plan view thereof.

Fig. 5 a detached view in elevation of the graduated elevation-screwsleeve.

Fig. 6 a detached view of the elevationscrew.

Fig. 7 a corresponding view of the elevation-screw lock-nut.

My invention relates to an improved adjustable-scale sight for firearms,the object being to produce a simple, compact and convenient sight ofthe type in which the scales are made adjustable to permit the sight tobe adjusted for use with a given individual rifle, a given type ofammunition, and by a given individual marksman.

With these ends in view, my invention consists in an adjustable-scalesight having certain details of construction as will be hereinafterdescribed and pointed out in the claims.

In carrying out my invention, which, as herein shown, is applied to atelescope riflesight, although its use is not so limited, I employ anelevation lock-nut 2 mounted upon the upper end of the elevation-screw 3and co-acting with a graduated elevationscrew sleeve 4 also mounted uponthe said screw which in turn is mounted in the split upper portion ofthe mounting-frame 5 the lower end of which is formed with an undercutdovetail groove 6 receiving a bindingscrew 7 for firmly attaching themountingframe to a mounting rib (not shown) upon the barrel or receiverof a rifle.

I also employ a windage lock-nut 8 mounted upon the outer end of thewindagescrew 9 and co-acting with a graduated windage-screw sleeve 10also mounted upon the said screw which in turn is mounted in the splitupper portion of the frame 5 the opposite sides of which are formed withlugs 11 and 12 receiving a clamping-screw 13 by means of which theelevation and windage-screws may be temporarily clamped and held duringthe adjustment of the sight and then released for being turned in thenormal use of the sight.

The tube 14 of the telescope sight passes from rear to front through themounting frame and has its upper face maintained in engagement with thelower end of the elevation-screw by means, as herein shown, of agrasshopper spring 15, while the tube is normally held against the innerend of the windage-screw by means of a spring actuated plunger 16mounted in an offset 17 of the frame 5.

For coaction with the sleeves 4 and 10, I employ a combined elevationand -windage indicator 18 secured to the frame 5 by the clamping-screw13 aforesaid, the respective pointed ends or wings of this indicatorbeing in contact with the said graduated sleeves.

In using my improved adjustable-scale sight as applied to a telescopesight, the rifle is fired at a bulls eye placed at any one of the rangesfor which the sight is graduated, but preferably for the shortest range,the elevation and windage screws being adjusted from time to time asfound necessary to bring the telescope sight into the position requiredfor hitting the bulls eye at the range chosen. When the sight has inthis manner been adjusted to hit the bulls eye, the clamping-screw 13 isturned to draw the two split sides of the frame together so as tovirtually clamp the elevation and windagescrews in the positions towhich they have been brought as described. The lock-nuts 2 and 8 are nowreversed so as to release the sleeves 4 and 10, which are turned untiltheir graduations corresponding to the given distance, are brought intoregistration with the respective ends of the indicator 18 after whichthe lock-nuts 2 and 8 are turned back to bind the screw-sleeves in thesaid positions. The clamping-screw 13 is then re versed so as to releasethe elevation and windage-screws 3 and 9. By this cycle of operations,the sight has been adjusted to meet the specific equations presented bythe individual rifle, the type of ammunition being used, and theindividual marksman. The sight having been thus adjusted, will be usedin the same manner as an ordinary sight, the screw-sleeves being turned,and with them the elevation and windage-screws, as required to adjustthe sight to difl'erent ranges and different conditions of wind.

1. An adjustable-scale sight for firearms, having an adjustableelevation-scale, an adjustable windage-scale, and an indicator common toboth scales.

2. An adjustable-scale sight for firearms, having a mounting-frame, anelevationscrew mounted therein, a graduated elevation-screw sleevemounted on the said screw,

and a lock nut for the said sleeve also mounted upon the said screw.

3. An adjustable-scale sight for firearms, having a mounting-frame, anelevationscrew mounted therein, a graduated elevation screw sleevemounted on the said screw, a lock-nut for the said sleeve also mountedupon the said screw, and means for clamping the screw against rotationduring the adjustment of the sight.

4:. In an adjustable-scale sight for firearms, the combination with themountingframe thereof, of elevation and 'windagescrews mounted in thesaid frame, means for temporarily clamping the said screws againstrotation in the frame, a graduated-screw sleeve and a lock-nut for eachof the said screws, and indicating means for co-action with the saidsleeves.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ERIK S. PALMER. Witnesses:

THOMAS C. JoHNsoN, FRANK A. PAUL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

